PART 1: Use a diagram of your own or a bullet format where you compare epithelial, connective, muscle, and nervous tissue. You must have at least three comparisons for each type of tissue. For example, Epithelial tissue covers and outside barriers, while connective tissue connects different elements of the body and is the most abundant.
PART 2: Name the 11 systems of the human body. For each system, give its function
PART 3: Define the term homeostasis and give an example.
PART 1: Comparison of Tissue Types
Comparison of Epithelial, Connective, Muscle, and Nervous Tissue
| Tissue Type | Structure | Function | Location |
|---|---|---|---|
| Epithelial Tissue | Tightly packed cells with little extracellular matrix | Covers body surfaces, lines cavities, and forms glands | Found in skin, digestive tract lining, and respiratory passages |
| Connective Tissue | Cells dispersed within an extracellular matrix (fibers and ground substance) | Supports, connects, and protects body structures | Found in bone, blood, cartilage, tendons, and adipose tissue |
| Muscle Tissue | Composed of elongated cells (muscle fibers) that contract | Facilitates movement, maintains posture, and produces heat | Found in skeletal muscles, heart (cardiac), and walls of hollow organs (smooth muscle) |
| Nervous Tissue | Consists of neurons and supporting glial cells | Conducts electrical impulses for communication and control | Found in the brain, spinal cord, and nerves |
PART 2: The 11 Systems of the Human Body and Their Functions
- Integumentary System – Protects the body, regulates temperature, and prevents water loss (e.g., skin, hair, nails).
- Skeletal System – Provides structural support, protects organs, produces blood cells, and stores minerals (e.g., bones, cartilage, ligaments).
- Muscular System – Enables movement, posture maintenance, and heat production (e.g., skeletal, smooth, and cardiac muscles).
- Nervous System – Controls body functions and communication via electrical signals (e.g., brain, spinal cord, peripheral nerves).
- Endocrine System – Regulates physiological processes through hormones (e.g., pituitary gland, thyroid, adrenal glands).
- Cardiovascular System – Transports oxygen, nutrients, and waste through blood circulation (e.g., heart, blood vessels, blood).
- Lymphatic System – Supports immunity and fluid balance (e.g., lymph nodes, spleen, lymphatic vessels).
- Respiratory System – Facilitates gas exchange (oxygen intake and carbon dioxide removal) (e.g., lungs, trachea, bronchi).
- Digestive System – Breaks down food, absorbs nutrients, and eliminates waste (e.g., stomach, intestines, liver, pancreas).
- Urinary System – Filters waste from blood and regulates water and electrolyte balance (e.g., kidneys, bladder, ureters, urethra).
- Reproductive System – Produces gametes and enables reproduction (e.g., ovaries, testes, uterus, prostate).
PART 3: Homeostasis and Example
Definition: Homeostasis is the body’s ability to maintain a stable internal environment despite external changes. It involves regulatory mechanisms that balance temperature, pH levels, and other vital conditions.
Example: One common example is body temperature regulation. When body temperature rises, sweat glands activate to release sweat, which cools the body through evaporation. Conversely, if the body temperature drops, shivering generates heat to maintain a stable temperature around 98.6°F (37°C).
By maintaining homeostasis, the body ensures optimal conditions for cellular function and overall healt